96 Impala SS; idles rough, rich exhaust, hesistates and won't accelarate. I've changed MAP, CPS, TPS, MAF, plugs and wires still the issue exsist. Fuel is at 43 psi.
are there any trouble codes? could possibly be the cat we just had that problem on a 3.8 pontiac grand prix with the supercharged motor.
why are you guessing ,that can get expensive ! just go to auto zone and let them read the codes.
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